15878420

素因数分解:

$2^2\times 5^1\times {\mathrm{601}}^1\times {\mathrm{1321}}^1$

素因数の和:1931

約数の個数: 24

約数和(自身を含む): 33425448

約数和(自身を除く): 17547028

約数列:

[1, 2, 4, 5, 10, 20, 601, 1202, 1321, 2404, 2642, 3005, 5284, 6010, 6605, 12020, 13210, 26420, 793921, 1587842, 3175684, 3969605, 7939210, 15878420]

約数ペア:

[(1, 15878420), (2, 7939210), (4, 3969605), (5, 3175684), (10, 1587842), (20, 793921), (601, 26420), (1202, 13210), (1321, 12020), (2404, 6605), (2642, 6010), (3005, 5284)]